CVE-2026-41455

WeKan < 8.35 SSRF via Webhook URL

HIGH
8.5
CVSS Score
Published: April 22, 2026 at 09:09 PM UTC
Updated: July 14, 2026 at 09:34 PM UTC
1 product affected across 1 vendorWekan

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Severity
HIGH8.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

WeKan before 8.35 contains a server-side request forgery vulnerability in webhook integration URL handling where the url schema field accepts any string without protocol restriction or destination validation. Attackers who can create or modify integrations can set webhook URLs to internal network addresses, causing the server to issue HTTP POST requests to attacker-controlled internal targets with full board event payloads, and can additionally exploit response handling to overwrite arbitrary comment text without authorization checks.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 8.35.0
Vendor states this is fixed in 2cd702f48df2b8aef0e7381685f8e089986a18a4 (unaffected)
Affected range stops below 8.35.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.5HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-918

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